crates/db_views_moderator/src/mod_add_community_view.rs

   1 use crate::structs::{ModAddCommunityView, ModlogListParams};
   2 use diesel::{result::Error, *};
   3 use lemmy_db_schema::{
   4   newtypes::PersonId,
   5   schema::{community, mod_add_community, person, person_alias_1},
   6   source::{
   7     community::{Community, CommunitySafe},
   8     moderator::ModAddCommunity,
   9     person::{Person, PersonAlias1, PersonSafe, PersonSafeAlias1},
  10   },
  11   traits::{ToSafe, ViewToVec},
  12   utils::limit_and_offset,
  13 };
  14
  15 type ModAddCommunityViewTuple = (
  16   ModAddCommunity,
  17   Option<PersonSafe>,
  18   CommunitySafe,
  19   PersonSafeAlias1,
  20 );
  21
  22 impl ModAddCommunityView {
  23   pub fn list(conn: &PgConnection, params: ModlogListParams) -> Result<Vec<Self>, Error> {
  24     let admin_person_id_join = params.mod_person_id.unwrap_or(PersonId(-1));
  25     let show_mod_names = !params.hide_modlog_names;
  26     let show_mod_names_expr = show_mod_names.as_sql::<diesel::sql_types::Bool>();
  27
  28     let admin_names_join = mod_add_community::mod_person_id
  29       .eq(person::id)
  30       .and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
  31     let mut query = mod_add_community::table
  32       .left_join(person::table.on(admin_names_join))
  33       .inner_join(community::table)
  34       .inner_join(
  35         person_alias_1::table.on(mod_add_community::other_person_id.eq(person_alias_1::id)),
  36       )
  37       .select((
  38         mod_add_community::all_columns,
  39         Person::safe_columns_tuple().nullable(),
  40         Community::safe_columns_tuple(),
  41         PersonAlias1::safe_columns_tuple(),
  42       ))
  43       .into_boxed();
  44
  45     if let Some(mod_person_id) = params.mod_person_id {
  46       query = query.filter(mod_add_community::mod_person_id.eq(mod_person_id));
  47     };
  48
  49     if let Some(community_id) = params.community_id {
  50       query = query.filter(mod_add_community::community_id.eq(community_id));
  51     };
  52
  53     if let Some(other_person_id) = params.other_person_id {
  54       query = query.filter(person_alias_1::id.eq(other_person_id));
  55     };
  56
  57     let (limit, offset) = limit_and_offset(params.page, params.limit)?;
  58
  59     let res = query
  60       .limit(limit)
  61       .offset(offset)
  62       .order_by(mod_add_community::when_.desc())
  63       .load::<ModAddCommunityViewTuple>(conn)?;
  64
  65     let results = Self::from_tuple_to_vec(res);
  66     Ok(results)
  67   }
  68 }
  69
  70 impl ViewToVec for ModAddCommunityView {
  71   type DbTuple = ModAddCommunityViewTuple;
  72   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  73     items
  74       .into_iter()
  75       .map(|a| Self {
  76         mod_add_community: a.0,
  77         moderator: a.1,
  78         community: a.2,
  79         modded_person: a.3,
  80       })
  81       .collect::<Vec<Self>>()
  82   }
  83 }